code: def test_prec_long_rel():
      rel = np.arange(100)
      items = [1, 0, 150, 3, 10]
  
      r = _test_prec(items, rel, k=5)
      assert r == approx(0.8)
  
file_path: lkpy/tests/test_topn_precision.py
imports: import numpy
  import pandas
  from pytest import approx
  from lenskit.topn import precision
  from lenskit.util.test import demo_recs
  from lenskit import topn
label_desc: Use image node_id 9 for calling a global function with example usage: test_prec_long_rel() without return types